Five ideas for weekend family fun:Dia de los Muertos: Once the trick-or-treating’s done, head over to the city for a dash of Mexican music and culture at the San Francisco Symphony’s Dia de los Muertos Family Concert on Sunday. The matinee includes family activities, colorful displays, refreshments and, of course, music. Lobby festivities begin at 1 p.m., concert downbeat is at 2 p.m. $15-$65, children younger than 17 get in for half price.Zombie Express: Downtown Benicia’s Southern Pacific Railroad Depot has been transformed into a zombie wonderland. Join the costumed merrymakers at the Haunted Depot from 6 to 9 p.m. Friday and from noon to 3 p.m. and 6 to 9 p.m. on Halloween itself. Join the event’s canned food drive and admission to the spookfest is just $3 for adults and $1 for kids younger than 8. (Without a donation, it’s $6 and $3.)

Elphaba Goes Green:Zeum, San Francisco’s Children’s Museum, is celebrating a “Wicked” Halloween on Saturday with a costume contest judged by Madame Morrible (Patty Duke) and other cast members from 11 a.m. to noon, and “Wicked”-inspired Claymation workshops, music video sessions and craft projects from 11 a.m. to 5 p.m. Tickets $8-$10.

Monster Bash: Explore a haunted aircraft carrier when the USS Hornet rolls out all the ghostly stops on Halloween. The family friendly fun runs from 7:30 p.m. to midnight, and includes haunted tours, costume contests, a flight aboard Elvira’s Fright Stimulator and plenty of mad scientist action. $10 for kids, $20 for grown-ups ($25 at the door).

Forget the Vampires: Figure out the secrets of bats and other animal creatures at the Bay Area Discovery Museum’s newest exhibit, “Animal Secrets,” which opens Saturday. Tickets $8-$10.